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Finding the Fourth Proportional to 337,640.20, 506,460.30 and 137,960.40

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Solution

The fourth proportional to 337,640.20, 506,460.30 and 137,960.40 is: 206,940.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    337,640.20 : 506,460.30 = 137,960.40 : x
  2. Step 2: Convert to fraction form
    337,640.20/506,460.30 = 137,960.40/x
  3. Step 3: Cross multiply
    337,640.20x = 506,460.30 × 137,960.40
  4. Step 4: Simplify right side
    337,640.20x = 69,871,465,572.12
  5. Step 5: Solve for x
    x = 69,871,465,572.12/337,640.20
  6. Step 6: Final answer
    x = 206,940.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.